Needleless vial access device
US5411499A · kind A · utility
209Cited by
12References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1991 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Jul 30, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/197
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cannula assembly adapted to pierce a solid or unslit closure is disclosed and includes a blunt cannula and a piercing member held in cooperation with or contained within the flow channel of the cannula. Generally, the piercing member includes a tip capable of piercing an unslit stopper or closure and a means to temporarily retain the piercing member from the cannula and prevent inadvertent disengagement of the piercing member from the blunt cannula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.